#include <stdio.h>
#include "string.h"
#include "stdlib.h"
int er;
struct Student{
    char name[20];
    int age;
};  // 在定义的时候不会分配内存空间
struct{
    char name[20];
    int age;
} stus,swe;
// 10101010 10101010 10101010 10101010
union Stu{
    char name[20];
    int age;
};
typedef char* STP;
STP s;
int main() {
    as aw = 90;
    int a[10] = {1,2};
    union {
        unsigned  int n;
        unsigned char c;
    }u1;
    u1.c = 'A';
    printf("%d\n",a[2]);
    asd = 45;
    return 0;
}
int asd;
